Die-forming machine



M. H. DUNBAR. DIIE FORMING MACHINE. APPLICATION FILED AUG-3|. l92l.

Patented Dec. 5, 1922.

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gwuentoz Mia/Z'Dzgzzar M. H. DUNBAR.

D|E.FORMING MACHINE. APPLICATION men AUG.3I. I921.

Patented Dec. 5, 1922.

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' m5 roams-momma. APPLICATION FILED AUG.3I| 192].

Patented Dec. 5,1922.

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l 1 W170 lfDazzar M. H. DUNBAR.

- -D|E FORMING MACHINE.

APPLICATION FILED AUG-3|,192l.

Patented Dec.,5, 1922.

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IAE'ZA? MILO H. DUNBAB, OF CANTON, OHIO.

DIE-FORMING NIACHINE.

Application filed August 31, 1921. SerialNo. 497,214.

To all whom'it may concern: I

Be it known that I, Miro H. DUNBAR, a citizen of the United States, residing at C'anton, in the county of Stark and State of 5 Ohio, have inventedv a new and useful Die- Forming Machine, of which the following is a'specification.

This invention relates to die forming machines and has for its objects to provide a device of'this character'especiallyi adapted for formin battery terminals and similar articles, which may be'cast of lead or other metal which may be easily poured.

With these objects in view the invention consists in the construction and arrangement of parts, hereinafter described and illustrated in the accompanying drawings, it being understood that various changes in the form and details ofconstruotion may be made within the scope of the appended claims. a a

A preferred embodiment of theinvention thus set forth in general terms is illustrated in the accompanying drawings,- inwhich Figure 1 is a front elevation ofa machine embodying the invention, parts being broken away for the purpose of illustration; Fig. 2, an end elevation of the same;

Fig. 3, a plan view thereof;

Figj 4, an enlarged, longitudinal, sectional view through the dies;

Fig. 5, a transverse, sectional through one of the water jackets; and

Fig. 6, a vertical, sectional'view through a battery terminal such as is formed'in the de- Vice. 7

Similar numerals of reference indicate corresponding parts'throughout the several views. I

The device includesthe bed plate 1 which is longitudinally slotted as at 2 and provided with the depending flanges 3 upon opposite sides of said slot. The bed plate is supportedas' by the standards 4 which are preferably connected together by the longitudinal brace bars'5, a transverse Web 6 be ing supported upon said bars intermediate their extremities.

The form'or' die illustrated is designed for forming a battery terminal such as is shown view in cross section in Fig. 6 which includes the I stem 7 provided. with the annular flange 8,

the threaded portion 9 and the tapered ex-,

tremity 10, a flange 11 extending upon opposite sides of the lower end portion oi the stem in the usual manner for connecting the battery plates. a

The terminal illustrated is provided with a central brass tube 12, internally screw threaded, and the dies which are shown in the accompanying drawings are designed to form this terminal 2 with the brass tube therein.

The die includesthe spool 13 provided nwith acentralbore 14 outwardlyv flared at its upper end as shown at 15 to formthe conical or tapered end 10 of the terminal.

An annular. flange 16 is provided around the lower end portion ofthe spool 13 and rests upon the top of the bed plate, being held fixedly thereon bymeans of the screws 17 which are passed upwardly through the "disk 18 locatedagainst the'bottom edges of the flanges 3.

' A rod or post'19 1s fixed at its lower end to the disk 18 and extends upwardly through the bore 14 of the spool 13, having the reduced. shouldered pin 20 at its upper extremity arranged to receive'the brass tube 12, the open end'thereof engaging the shoulder 21 of said pin to position the tube prop erly within the die.

A pair of sliding dies 22 are mounted for horizontal movement upon the bed plate and are arrangedto engage each other and the spool 13, as best shown in Fig.4. Each of these sliding dies is-provided upon itsinner face with a half round cut-out portion as at 23 to receive the spool 13, the threaded cutout portions 24 being formed in the inner surfaces of said dies and communicating with the cut-out portions 23. I

The halfround cut-out portions 25 provided with the enlarged, half round recesses 26, are formed in said dies above the threaded portions to form'the body portion ofthe :stem 7 and the flange or rib 8, the cut-out threaded portions 24 being provided to form the threads 9 upon the finished battery terminal as shown in Fig. 6.

- The plates2'l', 28'and 29 are mounted upon the upper surfaces of the dies 22, the plates 27 being provided with the'cut-out portions 30 toform the flanges 11 upon the battery terminal, the plates 28 and 29 being pro vided with the cut-out portions 31 and 32 respectively, forming a pouring spout into which the molten metal is poured. i

These plates are loosely mounted upon the upper surfacesof the dies 22, the posts 33 being carried upon the dies 22 and extending upwardly through suitable apertures in said plates, the upper extremities of said ,poSts being threaded and provided with the .nuts 34, coil springs being located around the posts between the nuts and the upper surfaces of the plates 29, thus holding the plates normally in the position shown in Fig. 4, but allowing for movement f the plates which is often necessary in separating the dies 22 after aterminal has been cast or molded therein.

Each otthe sliding dies 22 is preferably provided with a water jacket 36, for the purpose of cooling the die, these jackets being preferably attached to the slice by means of the screws 37 which are also passed through the angular sliding brackets 38, these brackets being slidably mounted upon the bed plate, bolts :39 being ca-rriedby the brackets and depending through the annular slot 2 in the bed plate, plates 40 being carried upon the'lower extremities of" the bolts, these plates being spaced'slightlyl beneath the flanges 3 in order to allow the brackets 38 to be moved horizontally upon the bed plate.

The water jackets '36 are provided with the inlet and outlet apertures 41 and 42 respectively, each inlet aperture being .con nected to a suitable source of water supply as by the flexible hose 43, a hose as being connected to each outlet aperture for the purpose of carrying the heated water away from the water jackets. The circulation of cold water may thus be constantly passed through each water jacket during the operation of the machine.

A bell crank lever45 is pivoted as at46 between the flanges 3 near each end of the bed plate, the upper end thereof being connected as by the link 47 with the adjacent sliding bracket 38. The lower leg 48 of eachbell crank is provided with a plurality of spaced apertures 49 for selective engagement of the pivot 50 ofthe adjacent connecting rod 51, said. connecting rods being provided with means for longitudinal adjustment such as the turnbuckles 52.

A pair of spaced upright posts 53 are mounted upon the web 6 and slidably mounted thereon is the pedal- 54,-provided with the spaced bearings 55. and 56 which are slidably mounted upon the posts 53. A bar 57 is connected to the upperends oi the posts 53 to act as a bumper or stop for the pedal, the ends thereof extending beyond the posts on either side and carrying the upper ends. of the contraction springs '58, the lower ends of which are. connected. to

the lugs (i0 upon the pedal for the. purpose of normally holding the pedal in the initial position, tLSrSllOWH inFig. 1.

in operating. the vdevice, the parts being in tlie'rinitial-lposition as; shown. the drawings, the pedal is depressed and through the connecting bars 51, bell cranks 45 and links 47, the sliding brackets 38 are moved oppositely away from the spool 23. A brass tube 12 is then placed upon the pin 20 in the position shown in Fig. 4, and the pedal released, allowing the parts to assume the initial position, the dies being closed, as best shown in Fig. 4.

The molten metal is then poured from a ladle or the like into the pouring spout 32 of thedies, and as soon as the metal has cooled, which in the case of :lead is almost instantaneous, especially with the use of the waterjackets as shown, the pedal is depressed opening the dies when the finished article may be easily removed from the pin 20.

.The top portion of each movable die 22 being stormed of a series of vertically movable plates, it will be seen that the dies may be easily and, quickly moved outwardly out of engagement with the finished article, the plates 27,28 and 29 being allowed to move vertically to disengage the dies from the finished product.

Although the dies illustrated are designed for the purpose of casting a particularform of battery terminal, it will be evident, of

course, that'other dies may be provided in the machine for casting articles of different shapes, without departing from the invention. a i

I clairn,:--- 1. A device of the character described, including a bed plate, a'spoolfixed upon the bed plate, a pair of oppositely movable dies slidably mounted upon the bed plate, arranged to enclose the spool, bell cranks upon opposite ends'of the bed'plate, a link connecting each bell crank to the adjacent die, a pedal, and connecting rods connecting the bell cranks to the pedal.

2, A device of the character described, in-

cluding a pair of oppositely movable dies and a plurality of plates mounted upon the upper surface oteach die and arranged for independentmovement perpendicular to the normal plane of the dies.

3. A device of the character described, including; a pair of oppositely-movable dies and a plurality of plates mounted upon the upper surface of each die, and flexible :means for holding said plates, in engagement with each other and; with the (llGS.

said dies and extending through said plates and spring means upon: the posts engaging the upper surfaces of the upper plates.

- Aideviceofsthe character described, including. a: bed. plate, a: pair of oppositely anovable; dies mounted upon the bed plate, e30

ream 1o? bell cranks upon opposite ends of the bed plate, a link connecting each. bell crank to the adjacent die, a pedal, and connecting rods connecting the bell cranks to the pedal. 5 6. A device of the character described, in-

cluding a bed plate, standards supporting the bed plate, a Web supported at the lower ends of the standards, a pair of oppositely movable dies mounted upon the bed plate, a 10 bell crank mounted at each end of the bed plate, a link connecting each bell crank to the adjacent die, a pair of upright posts upon said Web, a pedal slidably mounted upon said posts, connecting rods connecting said bell cranks with the pedal and springs for normally holding the pedal in the raised position.

In testimony that I claim the above, I have hereunto subscribed my name. MILO H. DUNBAR. 

